package org.hackystat.devcathlon.ui.page.commons.panels.clock;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.text.DateFormat;
import java.util.Date;
import java.util.TimeZone;

import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.model.AbstractReadOnlyModel;

/**
 * A simple component that displays current time.
 * 
 * @author Igor Vaynberg (ivaynberg)
 */
public class Clock extends Label {
  /** Support serialization. */
  private static final long serialVersionUID = 1L;

  /**
   * Clock constructor.
   * 
   * @param id
   *          Component id
   * @param tz
   *          Timezone
   */
  public Clock(String id, TimeZone tz) {
    super(id, new ClockModel(tz));

  }

  /**
   * A model that returns current time in the specified timezone via a formatted
   * string.
   * 
   * @author Igor Vaynberg (ivaynberg)
   */
  private static class ClockModel extends AbstractReadOnlyModel {
    /** Support serialization. */
    private static final long serialVersionUID = 1L;
    private final DateFormat df;

    /**
     * @param tz The time-zone
     */
    public ClockModel(TimeZone tz) {
      df = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.LONG);
      df.setTimeZone(tz);
    }

    /**
     * @see org.apache.wicket.model.AbstractReadOnlyModel#getObject()
     * @return The formatted date string.
     */
    @Override
    public String getObject() {
      return df.format(new Date());
    }
  }
}